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/*
* audio.h: A program for the Video Disk Recorder
*
* See the README file for copyright information and how to reach the author.
*
*/
#ifndef __audio_h_
#define __audio_h_
#include "global.h"
#include "debug.h"
#include "index.h"
#include "decoder.h"
#include "criteria.h"
/**
* detect audio channel changes and set channel marks
*/
class cAudio {
public:
/**
* store maContext and recordingIndex for future use in this class
* @param decoderParam pointer to decoder
* @param indexParam recording index
* @param criteriaParam analyse criteria
*/
explicit cAudio(cDecoder *decoderParam, cIndex *indexParam, cCriteria *criteriaParam);
~cAudio();
/**
* detect audio based marks
*/
sMarkAdMarks *Detect();
private:
/**
* MP2 stream silence
*/
typedef struct sAudioMP2Silence {
int startPacketNumber = -1; //!< start packet number
//!<
int64_t startAudioPTS = -1; //!< start PTS of decoded audio frame
//!<
int64_t startVideoPTS = -1; //!< start PTS of nearest video packet
//!<
int stopPacketNumber = -1; //!< stop packet number
//!<
int64_t stopAudioPTS = -1; //!< stop PTS of decoded audio frame
//!<
int64_t stopVideoPTS = -1; //!< stop PTS of nearest video packet
//!<
} sAudioMP2Silence;
/**
* set channel change marks
*/
void ChannelChange();
/**
* detect silence marks
*/
void Silence();
/**
* reset audio marks array
*/
void ResetMarks();
/**
* add a new mark ti mark array
* @param type mark type (MT_CHANNELSTART or MT_CHANNELSTOP)
* @param packetNumber packet number of the mark
* @param framePTS PTS of decoded frame
* @param channelsBefore number of channels before change
* @param channelsAfter number of channels after change
*/
void AddMark(const int type, const int packetNumber, const int64_t framePTS, const int channelsBefore, const int channelsAfter);
cDecoder *decoder = nullptr; //!< pointer to decoder
//!<
cIndex *index = nullptr; //!< pointer to index
//!<
cCriteria *criteria = nullptr; //!< pointer to analyse criteria
//!<
int channelCountBefore = 0; //!< AC3 channel count of frame before
//!<
sMarkAdMarks audioMarks = {}; //!< array of marks to add to list
//!<
sAudioMP2Silence audioMP2Silence = {}; //!< start/stop of silence
//!<
};
#endif
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